1992-1999Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and
common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres
Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

ok, I stopped by napa and picked up a heavy duty 180 t-stat, a PCV valve, and a O2 sensor.

haha, now heres the good part, would anyone wanna help me by giving me some directions on how to do them?
also on the t-stat box it has directions, it says to drain the coolant, is that nessecary? because i just flushed it about a month ago. also there is one screw/bolt one the side and one on top of the thermostat housing do i remove the one on top too?

I have no idea what the PCV valve is,, where it'* at or anything...

on the O2 instructions it says that anti-seize is not required on flange style units, does that mean I need to use it or does my engine have a flange?
-any help or directions will be greatly appreciated, thanx.

1) The t-stat is held on by the two bolts on the sides of the housing. You shouldn't need to touch the one on top. I belive that is actually some sort of valve (never played with it myself). I have never draind the coolant, just make sure you do this to a cold engine. I just pull off the hose leading to the housing and some coolant will spill out, but not much. After it is done I let it run, look for leaks, and eventually refill any coolant that was lost if needed.

2) The O2 is really easy. If it is anything like mine you will find it at the top of the down pipe leading to you catalytic converter. Save yourself the time and headache and buy a O2 socket. It looks like a regular socket except it has a cutout on one side for the wireing harness to get out of the way. Just unscrew the old one and screw in the new. Make sure you hook all the wires back up (only 1 connection).

WL, you have a 93 SSEi. Your PCV valve is in the Supercharger. Remove the cover, and as you're facing the engine, look at the top of the SC on the throttle body end, just to the rear (closest to the firewall). You'll see a little black metal plate. Remove it, and the PCV valve is inside. You may need to use small pliers to pull it out, and make sure the seal is in good shape before installing the new one.

For the thermostat, everything that'* been said. You may need to get the fiber gasket for the thermostat housing from the dealer, but you should be able to get the rubber 'rim seal' for the stat at the parts store where you bought the stat. Stuff a rag in the hole or leave the old thermostat in while you clean the old gasket off the lower intake surface. This will keep particles from getting into the block.